Hear replies aloud in the Playground

Have the Playground read each reply in the agent’s call voice, or try another voice without changing the agent.

Where to find it

AI agents › Playground › Voice replies

Open this screen
Playground on a computer: the agent’s panels (data sources, voice replies, instructions) on the left and the test chat on the right.

Steps

  1. Open AI agents › Playground and choose the agent.
  2. In Voice replies, tick Read each reply aloud in this voice.
  3. To try a different voice, pick it in the voice list; pick Back to the agent’s voice to return.
  4. Press Test to hear a sample sentence.

Settings on this screen

SettingWhat it doesDefault
Read each reply aloud in this voice.Speaks every new reply. Remembered per agent in this browser.Off
Voice listAgent’s voice, or a voice to test: AI voices, Standard phone voice, More voices, Your cloned voice.Agent’s voice
TestPlays a sample sentence in the chosen voice.—
Voice mode / Voice offThe same switch in the chat header.—

Troubleshooting

The switch is greyed out and the header says Phone voice (cannot be played here).

The agent’s call voice cannot be played in the browser. Pick another voice in the list to test, or choose a call voice on AI voices.

Tips

  • A Twilio voice is spoken by the phone network on a real call; here your browser’s voice stands in.
  • A Vapi voice reads replies only on a Vapi call; here you hear its sample.
  • When no voice is chosen for the agent, replies are read in the default voice, Eve.

Good to know

  • Testing a voice here does not change the agent’s voice.

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